Andy B. a écrit :
Sorry about the "3333", it was a typo. Of course I meant 3306.
My rules are working when we are talking about the external interfaces
(eth0), and the SQL Server is responding when talking directly to 10.0.0.100
You didn't say what is the kernel version. If it is >= 2.6.11, you're stuck.
As I suggested to someone else having the same problem as you, instead
of using a DNAT rule you may use a TCP "proxy" such as stone
(<http://www.gcd.org/sengoku/stone/>, supports UDP too) or 6tunnel
(<http://toxygen.net/6tunnel/>, originally designed to relay connections
between IPv6 and IPv4 hosts but works between IPv4 hosts too) which
listens on the local port 3306 and relays the local connexions to the
remote SQL server.